let isAndroid = navigator.userAgent.indexOf('Android') > -1 || navigator.userAgent.indexOf('Adr') > -1;
let isiOS = !!navigator.userAgent.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/);

//这是必须要写的，用来创建一些设置
function setupWebViewJavascriptBridge(callback) {
  //Android使用
  if (isAndroid) {
    if (window.WebViewJavascriptBridge) {
      callback(window.WebViewJavascriptBridge);
    } else {
      document.addEventListener(
        'WebViewJavascriptBridgeReady',
        () => {
          callback(window.WebViewJavascriptBridge);
        },
        false
      );
    }
    sessionStorage.phoneType = 'android';
  }
  
  if (isiOS) {  //iOS使用
    console.log('-------isiOS--------WebViewJavascriptBridge-------------1----')
    if (window.WebViewJavascriptBridge) {
      console.log('-------isiOS--------WebViewJavascriptBridge-------------2----')
      return callback(window.WebViewJavascriptBridge);
    } 

    if (window.WVJBCallbacks) {
      return window.WVJBCallbacks.push(callback);
    }
    window.WVJBCallbacks = [callback];
    var WVJBIframe = document.createElement('iframe');
    WVJBIframe.style.display = 'none';
    WVJBIframe.src = 'wvjbscheme://__BRIDGE_LOADED__';
    document.documentElement.appendChild(WVJBIframe);
    setTimeout(() => {
      document.documentElement.removeChild(WVJBIframe);
    }, 0);
    sessionStorage.phoneType = 'ios';
  }

  else{
    if (window.WebViewJavascriptBridge) {
        callback(window.WebViewJavascriptBridge)
    } else {
        document.addEventListener(
            'WebViewJavascriptBridgeReady'
            , ()=> {
                callback(window.WebViewJavascriptBridge)
            },
            false
        );
    }
  }
}
//注册回调函数，第一次连接时调用 初始化函数(android需要初始化,ios不用)
setupWebViewJavascriptBridge((bridge) => {
  if(isiOS){
      console.log(isiOS)
  }else{
    bridge.init((message, responseCallback) => {
      var data = {
        'Javascript Responds': 'Wee!'
      };
      responseCallback(data);
    });
  }
 
});

export default {
  // js调APP方法 （参数分别为:app提供的方法名  传给app的数据  回调）
  callHandler(name, data, callback) {
    setupWebViewJavascriptBridge((bridge) => {
      bridge.callHandler(name, data, callback);
    });
  },
  // APP调js方法 （参数分别为:js提供的方法名  回调）
  registerHandler(name, callback) {
    console.log(name, callback)
    setupWebViewJavascriptBridge((bridge) => {
      bridge.registerHandler(name, (data, responseCallback) => {
        callback(data, responseCallback);
      });
    });
  }
};

